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Flatten an Array of Arrays in Swift
...into a 1D array or remove nil values, not both. It determines which to do based on if the 1st-level array's Element is an array or optional— so if you pass it a 2D array of optionals (e.g. [[Int?]]) it'll choose to flatten it to 1D (e.g. [Int?]). To both flatten to 1-D and remove 2nd-level nils,...
What does “dereferencing” a pointer mean?
... (C++ only) direct or indirect member variables of static objects or their bases, or undergo zero initialisation (e.g. new T(); and new T(x, y, z); perform zero-initialisation on T's members including pointers, whereas new T; does not).
Further, when you assign 0, NULL and nullptr to a pointer the ...
How should the ViewModel close the form?
...:
protected override void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
MainWindow window = new MainWindow();
var viewModel = new MainWindowViewModel();
viewModel.RequestClose += window.Close;
window.DataContext = viewModel;
window.Show...
Submitting a multidimensional array via POST with php
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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What does `:_*` (colon underscore star) do in Scala?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Run an Application in GDB Until an Exception Occurs
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to re-create database for Entity Framework?
...about losing data, I just want to be able to start fresh, recreate the database and start using Code-First migrations.
7 A...
How to change the CHARACTER SET (and COLLATION) throughout a database?
...
change database collation:
ALTER DATABASE <database_name> CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci;
change table collation:
ALTER TABLE <table_name> CONVERT TO CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci;
change col...
How do I access command line arguments in Python?
...of elements passed through command line you can use len() to determine it. Based on this, you can design exception/error messages if user didn't pass specific number of parameters.
Also if you looking for a better way to handle command line arguments, I would suggest you look at https://docs.python...
C# binary literals
...y
}
Original Post
Since the topic seems to have turned to declaring bit-based flag values in enums, I thought it would be worth pointing out a handy trick for this sort of thing. The left-shift operator (<<) will allow you to push a bit to a specific binary position. Combine that with the a...